I feed frozen/thawed medium rats to my biggest bp. He's my more relaxed feeder. My usual routine is thaw the rat, place it in the bin right in front of his favorite hide, close the lid and slide the tub back in place. I let him eat when he feels like it. Very rarely has he ever been super excited and striking around for the rats. I check in on him about a half hour lately and by this time he usually has the rat in a tight little hug. If you're feeding frozen/thawed perhaps try this. Some snakes don't want their meal dangling in their face constantly and prefer to just eat when they're ready. If you're feeding live I do not recommend leaving the animal in the enclosure unsupervised. A shy bp is an invitation for the mouse/rat to defend itself out of fear.